Test Bank For Berne And Levy Physiology 8th Edition Author:Koeppen All Chapters[1-44]Complete A+ Study Guide Newest Version

, Berne and Levy Physiology 8th Edition Koeppe
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Berne and Levy Physiology 8th Edition KoeppenTest Bank Koepp
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en: Berne and Levy Physiology, 8th Edition
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Chapter 01: Principles of Cell Function
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Test Bank qy



Multiple Choice qy




1. The subcellular structure that degrades proteins is called the:
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A. Tight junction qy



B. Mitochondria
C. Lysosome
D. Plasma membrane qy



E. Ribosome
ANS: C q y




2. An experiment is done to measure the uptake of an amino acid into a cell. The followi
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ng data are obtained:
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N




If Na+ is removed from the extracellular bathing solution, or if a drug is added that prevents t
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he cell from making adenosine triphosphate (ATP), the uptake of amino acid into the cell is
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ymarkedly reduced. According to this information, which of the followingmechanisms is pro
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bably responsible for the transport of the amino acid into the cell?
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A. Passive diffusion through the lipid bilayer qy qy qy qy qy


B. Uniporter
C. Transport ATPase qy



D. Na+ symporter qy



E. Na+ antiporter
qy



ANS: D
qy q y




3. A membrane permeable by only Na+ separates two compartments containin
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g Na2SO4,shown as follows:
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,Berne and Levy Physiology 8th Edition Koeppe
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Electrodes are placed in both compartments, and a voltage is applied (that of compartment A
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is held at 0 mV). What voltage applied to compartment B would resultin no net movement
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of Na+ across the membrane separating the compartments?
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A. –60 mV qy



B. –30 mV qy


C. 0 mV qy



D. +30 mV qy



E.
+60 mV qy



ANS: E
qy q y




4. The resting membrane potentN ial oRf a Ic e llGis –
USN
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B85.m
CV. The intracellular and extracellular concentrations of several ions are indicated
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in the following table, as is the calculated
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Nernst equilibrium potential (Ei) for each of these ions:
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Ion Concentration Concentration Ei
Inside Cell qy Outside Cell qy


+
Na 12 mEq/L qy 145 mEq/L qy 66 mV
qy




K+ 150 mEq/L qy 4 mEq/L
qy –96 mV qy




Cl– 30 mEq/L qy 105 mEq/L qy –33 mV qy




Ca++ 0.0001 mmol/dL qy 1 mmol/dL
qy 122 mV qy




The membrane has channels for Na+, K+, Cl–
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, and Ca++. The conductance of the membrane is the greatest for which ion?
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A. Na+
B. K+
C. Cl–
D. Ca++ A q y



NS: B qy




5. A cell contains the following membrane transporters:
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Na+ channelK+ channel
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Na+,K+-ATPase
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, Berne and Levy Physiology 8th Edition Koeppe
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nThe resting membrane voltage of the cell is –80 mV, and the intracellular and
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